The pinkish-red spots on your birch’s leaves appear to be erineum patches, which are a type of gall caused by very tiny eriophyid mites feeding on the leaf tissue. You will need a microscope to see ...

Q: Can you help me figure out what’s likely going on with this river birch tree? The tree has been dropping leaves incessantly since about April/May, hundreds per day. Should this tree be dropping its ...

Editor's note: Once a month, the OSU Extension master gardener's office of Franklin County profiles a plant that occurs naturally in central Ohio. As the growing season fades, we bid adieu to many of ...

In many places, spring happens gradually. But in far-north Fairbanks, Alaska, birch and aspen trees often put their leaves out over a span of just 24-48 hours, a dramatic event known as "greenup." ...

Well into their senescence period, birch trees' leaves have turned yellow near the Alaska Public Media studios in Anchorage as of Oct. 1, 2021. (Casey Grove/Alaska Public Media) It's green-and-gold ...

Fall is here and all of those end-of-season projects are looming. If you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service.

Birch trees are adored for their light foliage and peeling bark. While most people think of the white bark varieties, there are birch trees with gorgeous bark in shades of orange, red, or yellow, too.

It’s the time of year when yellownecked caterpillars will soon engulf unprotected river birch trees. These pests also feed on blueberry, hickory, maple and oaks, but I have only seen them on river ...

Q. (My) birch tree, planted many years ago, has never really grown full. In the spring, it will get tiny green leaves but (it’s) still very airy and not full foliage. We’ve been told not to prune it.